As a former Jehovah’s Witness (now Catholic) I get asked this most often.
The answer: One doesn’t.
Jehovah’s Witnesses are prepared to come at the Trinity from every angle, and when they do they try to get everything they have been trained about it out, unfortunately sometimes all at once! I used to be a Jehovah’s Witness, so I know. I used to do this. It is what we were trained to do! Now as a Roman Catholic, I am sharing what I know.
While many here have great arguments to use in defending the Catholic faith, they won’t work against a people who train every day on how not listen to you, who go to weekly training courses and memorize ways to catch you up in your speech, and practice new approaches monthly to use when they encounter you. They are prepared to more than you realize.
So what’s a Catholic to do? Simple. Respond by doing something they are NOT prepared for. What is that? Employing logistical apologetics.
Apostle Paul’s Logistical Apologetic Approach
Logistical apologetics is based on the approach employed by St. Paul when he gave his speech before King Agrippa as recorded in Acts 26. By the end of his speech, Paul had the Agrippa declaring: “You will soon persuade me to play the Christian!”—Acts 26:28.
In this speech St. Paul does not attempt to prove the existence of God or of Jesus or of any of the tenets of Christianity. What he does, however, is appeal to Agrippa’s knowledge of things and logic to show that he, Paul, is not a madman but a very sane man who has very logical reasons for being a Christian.
Paul tells his story of how he got to where he was, a man in chains now making a defense before King Agrippa. He effective puts his audience in his own shoes, demonstrating so effectively that logic gave him no choice but to become a Christian that his audience said among themselves: “This man is doing nothing to deserve death or imprisonment.” (Acts 26:24-31) While they didn’t exactly leave Paul as new converts to Christianity or believing in his message, they did walk away believing in Paul.
And that’s what we need to do when we talk with the Jehovah’s Witnesses about things. At the end of the day they probably won’t be leaving their Kingdom Hall and signing up for RCIA, but they should be able to see that our actions in choosing to be Catholic show a logic that can’t be argued against.
Approach No. 1: Demonstrate a Lack of Logic in What Gets Raised Against You
Before you start off on your apologetic discourse in imitation of the apostle Paul, you will probably have to earn any listening ear from the Witnesses. This will happen if you show them you are a logical person in regards to our chosen subject here, the Most Holy Trinity.
Doing this will require that you disarm their objections to the Trinity. And you will do this NOT by raising other arguments to counter theirs, but showing they don’t have an argument to begin with.
I will demonstrate this with two of the most common objections I personally get in the following post.